🇬🇧 Built for the UK FIRE community

Your net worth.
Your FIRE number.
One free tool.

Track everything you own and owe, calculate when you can retire, and explore five FIRE strategies — all without creating an account or sharing a single number with anyone.

No account required
Data stays on your device
Completely free
🔒 Private
Net Worth Calculator
Net worth
£897k
FIRE target
£625k
Yrs to FIRE
7.2
FIRE progress — Standard FIRE87.3%
Net worth target89.7%
FIRE reached in
2032
Savings rate
34.2%

What makes this different

📊 Net worth + FIRE in one tool
🔥 All 5 FIRE strategies
🇬🇧 UK State Pension support
📴 Works fully offline
🔒 Zero data collection
Features

Everything you need.
Nothing you don't.

Most FIRE calculators do one thing. This one tracks your complete financial picture and shows both where you are and when you'll get there.

📊
Complete net worth tracker
Add all your assets and liabilities — property, pensions, ISAs, savings, investments, mortgage, loans — and get your true net worth instantly.
🎯
Dual progress bars
Track your FIRE number and your net worth milestone separately. Because hitting £1m and reaching FIRE are related but different goals.
🔥
Five FIRE strategies
Switch between Standard, Lean, Fat, Barista, and Coast FIRE — each with its own calculated number and progress percentage.
🎛️
What-if explorer
Drag sliders to explore how changing your monthly contributions or expected growth rate affects your FIRE date — without touching your saved settings.
🏛️
UK State Pension offset
Include your State Pension forecast to reduce your required FIRE number — accounting for guaranteed income that many calculators ignore entirely.
📅
Monthly snapshots
Save your net worth each month and watch your history chart build over time. See exactly how much you've grown between snapshots.
💱
10 currencies
GBP, USD, EUR, CAD, AUD, CHF, SEK, NOK, SGD, and NZD. All formatting updates throughout the app instantly.
📴
Works offline
Install to your home screen on any phone or tablet for a full app experience. Works without a connection once loaded.
⬇️
Export & import
Download your data as a JSON file to back it up or transfer it to another device. You own your data — it's always yours to take.

Which type of FIRE
are you aiming for?

The app supports all five major FIRE strategies simultaneously — switch between them to understand how each changes your target number and timeline.

Your financial data is
nobody else's business.

Most finance apps want your data. This one doesn't collect it, store it, or send it anywhere. Ever.

🏠
Stored locally on your device Your data lives in your browser's local storage. No server receives it. There's nothing to hack on our end.
👤
No account. No email. No login. We don't know who you are and we don't need to. Open the app, start tracking.
🍪
No cookies, no tracking, no ads No analytics, no advertising scripts, no third-party anything that receives your data.
🔍
Fully open — inspect the code yourself View page source in your browser to verify exactly what this app does. No hidden behaviour.
Zero data
ever leaves
your device.
🇬🇧

Built specifically for UK finances

Most FIRE calculators are American. They assume 401(k)s, Roth IRAs, and Social Security. This one is built around the way UK finances actually work — ISAs, SIPPs, workplace pensions, and the State Pension that can significantly reduce how much you need to save.

ISA & S&S ISA SIPP / workplace pension State Pension offset Final salary / DB pension Buy-to-let mortgage Help to Buy ISA £ GBP default UK withdrawal rate guidance
Comparison

How it stacks up

Feature This calculator Networthify WalletBurst fire.picheta.me
Net worth tracking ✓ Full Basic No No
FIRE strategies ✓ All 5 1 1–2 1
UK State Pension ✓ Yes No No ✓ Yes
No account required ✓ Yes ✓ Yes ✓ Yes ✓ Yes
Installs as mobile app ✓ PWA No No No
Works offline ✓ Yes No No No
Zero data collection ✓ Yes Unclear Ads present Unclear
Monthly snapshots ✓ Yes No No No

Start tracking your
financial independence.

No sign-up. No subscription. No data leaving your device. Just open it and start.