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Insurance & Protection · Property & Casualty

Flood Insurance Coverage Calculator

Short answer: What does the Flood Insurance Coverage Calculator calculate?

The Flood Insurance Coverage Calculator works out excess flood coverage needed, NFIP building coverage available and NFIP contents coverage available. See how much of your building and belongings the NFIP can cover and how much excess flood coverage you would need. It uses US rules and USD, and it is free to use on this page.

Updated · Applies to the United States (US rules, USD)

  • Free to use here · embed on the Business plan
  • 4 inputs · 7 results
  • Works in 6 languages
  • Uses US rules and USD

Try the Flood Insurance Coverage Calculator

See your NFIP coverage and any gap above it — results update as you type.

See all 12 themes
Theme
Mode

Ledger · Free on every plan · The classic CalcFunnel card: gradient results header, clean panels.

Loads from app.calcfunnel.com when you scroll here.

Estimates only — not a loan offer or financial advice. Switch theme and light/dark above to see how it could look on your site.

Put this calculator on your website

What this calculator does

What the Flood Insurance Coverage calculator works out

The Flood Insurance Coverage Calculator is a free, embeddable calculator from CalcFunnel. See how much of your building and belongings the NFIP can cover and how much excess flood coverage you would need.

You enter 4 inputs: building type, building replacement cost, contents value and deductible (each: building and contents).

It returns excess flood coverage needed, NFIP building coverage available, NFIP contents coverage available, building value above NFIP limit, contents value above NFIP limit and total flood coverage recommended, plus 1 more figure.

Built for insurance agents and benefits advisors. Embedding it on your own website needs the Business plan (from $210/month, with a 14-day free trial), which unlocks the Insurance & Protection category.

Results it shows

  1. 01Excess Flood Coverage Needed
  2. 02NFIP Building Coverage Available
  3. 03NFIP Contents Coverage Available
  4. 04Building Value Above NFIP Limit
  5. 05Contents Value Above NFIP Limit
  6. 06Total Flood Coverage Recommended
  7. 07Your Cost After a Total Loss (NFIP only)

The first figure — excess flood coverage needed — is the headline result.

Inputs

What you can change

Every field visitors can adjust, straight from the calculator, with the same help text they see on the info icon. Each one starts with a sensible default, and the 7 results update as they type.

Building Type
The NFIP sets different maximum limits by occupancy type.Options: Home (1–4 family) · Condo unit (owner) · Other residential (5+ units) · Non-residential / business
Building Replacement Cost
What it would cost to rebuild the structure — not its market value, which includes land. For a condo unit, use the value of the unit's building elements you are responsible for.
Contents Value
The value of furniture, belongings and, for a business, inventory and equipment.
Deductible (each: building and contents)
NFIP policies apply separate deductibles to building and contents claims. Enter the deductible you chose.

Definitions

Flood Insurance Coverage terms, defined

The terms this calculator uses, in plain words. The same definitions appear inside the calculator for your visitors.

National Flood Insurance Program (NFIP)
The federal flood insurance program run by FEMA and sold through insurance agents and participating insurers. Standard homeowners, renters and business policies do not cover flood, so flood coverage has to be bought separately. Lenders require it for mortgaged buildings in high-risk flood zones.
NFIP coverage limits
The most the NFIP will pay, set in federal regulation (44 CFR 61.6): $250,000 for the building and $100,000 for contents for one- to four-family homes and condo units; $500,000 for the building of other residential buildings; and $500,000 each for the building and contents of non-residential buildings.
Excess flood insurance
Private coverage that sits above the NFIP limits to cover the rest of a higher-value building or contents. Private flood policies that replace the NFIP entirely are also available in many areas and may include extras such as loss of use.
30-day waiting period
A new NFIP policy generally takes effect 30 days after purchase, so it cannot be bought when a storm is already forecast. Exceptions apply when coverage is required by a lender as part of a loan closing or after a flood map change.
Replacement cost vs. actual cash value
The NFIP pays contents at actual cash value (after depreciation). Building damage to a single-family primary residence is paid at replacement cost if it is insured to at least 80% of its replacement cost or the maximum available; otherwise the payment is reduced.
Separate deductibles
NFIP policies apply one deductible to building claims and another to contents claims, so a flood that damages both means paying two deductibles. A higher deductible lowers the premium.
Risk Rating 2.0
FEMA's pricing method for NFIP policies, which sets each premium from the property's individual flood risk — distance to water, flood frequency, elevation and rebuilding cost — rather than only its flood zone. Ask an agent for a quote; this calculator does not estimate premiums.

For your website

How it looks on your site

Put the Flood Insurance Coverage Calculator on your own site with your colors, copy and lead form, in whichever of these five ways suits the page. Every calculation can arrive in your CRM with the numbers attached.

Works on WordPress, Wix, Squarespace, Webflow, Shopify, GoHighLevel and plain HTML — paste one line into an HTML or code block. No plugin needed.

  • Inline, without an iframe

    Paste the snippet where the Flood Insurance Coverage Calculator should appear. It renders into your page, fills the width of its container and grows to fit.

    Best for: Landing pages, blog posts, calculator pages

  • Popup button

    A button sits on your page; one click opens the calculator in a popup over it.

    Best for: Pricing sections, hero areas, listings

  • Floating corner widget

    Paste once (or in your site-wide footer code) for a floating bubble in the corner of every page.

    Best for: Site-wide, always one click away

  • Your own link or button

    Give any existing link, button or image a class and it opens the calculator when clicked.

    Best for: Menus, images, in-text links

  • Direct link

    A full-page link to the calculator for emails, social posts, QR codes or a menu item.

    Best for: Email, social, print, QR codes

Start free How embedding works

Free plan, no card. 14-day trial on Pro & Business.

Widgets

Use it in a widget

Group the Flood Insurance Coverage Calculator with up to 11 other calculators in one widget: a floating launcher, tabs, a row of buttons or a card grid. Widgets per plan: Free 1, Pro 10, Business unlimited.

  • Floating launcher widget, Classic bubble design: Round launcher with a soft pulse and a clean list.

    Floating launcher

    A bubble in the corner of every page opens a menu of your calculators.

    6 ready-made designs

  • Tabs widget, Underline design: Text tabs with an animated underline.

    Tabs

    Calculators side by side in one block on the page, switched with tabs.

    6 ready-made designs

  • Buttons widget, Solid design: Filled buttons in your brand color.

    Buttons

    A row of buttons; each one opens its calculator in a popup.

    6 ready-made designs

  • Cards grid widget, Elevated design: White cards with a soft shadow and lift.

    Cards grid

    A grid of cards with an icon and a short blurb; click to open the calculator.

    6 ready-made designs

See every widget design

FAQ

Flood Insurance Coverage calculator FAQs

Still stuck? Ask the team — we reply within one business day.

Q.01What does the Flood Insurance Coverage Calculator calculate?
See how much of your building and belongings the NFIP can cover and how much excess flood coverage you would need. It returns excess flood coverage needed, NFIP building coverage available, NFIP contents coverage available, building value above NFIP limit, contents value above NFIP limit and total flood coverage recommended, plus 1 more figure.
Q.02What information do I need to use the Flood Insurance Coverage Calculator?
You enter 4 inputs: building type, building replacement cost, contents value and deductible (each: building and contents). Every input starts with a sensible default, so you can change only what you know.
Q.03What does “Building Type” mean in the Flood Insurance Coverage Calculator?
The NFIP sets different maximum limits by occupancy type.
Q.04What does “Building Replacement Cost” mean in the Flood Insurance Coverage Calculator?
What it would cost to rebuild the structure — not its market value, which includes land. For a condo unit, use the value of the unit's building elements you are responsible for.
Q.05Is the Flood Insurance Coverage Calculator free to use?
Yes — you can use it on this page for free, without an account. Embedding it on your own website needs the Business plan (from $210/month, with a 14-day free trial), which unlocks the Insurance & Protection category. Compare plans.
Q.06Can I embed the Flood Insurance Coverage Calculator on my website?
Yes. Embed it inline, as a popup button, as a floating corner widget, from your own link or button, or share a direct link. It works on WordPress, Wix, Squarespace, Webflow, Shopify, GoHighLevel and plain HTML sites with one line of code — see embedding.
Q.07Can I change how the Flood Insurance Coverage Calculator looks?
Yes. Choose from 12 themes, each in light and dark, then set your own brand colors and font. Ledger, Minimal, Compact come with every plan; the others unlock on Pro and Business.
Q.08Is the Flood Insurance Coverage Calculator available in other languages?
Yes. It works in English, Spanish, Simplified Chinese, Korean, Vietnamese and Arabic, with a right-to-left layout in Arabic. Labels, tooltips, results and definitions are translated, visitors can switch language inside the calculator, and amounts stay in US dollars and US number format.
Q.09Can the calculator capture leads?
Yes. It can end with a lead form, a Get a Quote form, a Share panel or a button to any URL. Leads are saved with the inputs and results attached and can be forwarded to your CRM by webhook.
Q.10Are the Flood Insurance Coverage results financial advice?
No. Estimates only. Uses the National Flood Insurance Program maximum limits in 44 CFR 61.6 ($250,000 building and $100,000 contents for one- to four-family homes and condo units; $500,000 building for other residential buildings; $500,000 building and $500,000 contents for non-residential buildings). It does not estimate premiums, which depend on the property's flood risk under FEMA's Risk Rating 2.0. Contents are paid at actual cash value, and building losses are paid at replacement cost only for a primary residence insured to at least 80% of its replacement cost or the maximum available. There is usually a 30-day waiting period. Consult a licensed insurance professional.

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