Free tools for spreadsheets
Browser tools to speed up your spreadsheet work: savings calculator (compound interest), habit streak calculator and more coming soon. Everything runs locally in your browser — no data sent anywhere.
Budget calculator — free online tool
Free online budget calculator: enter your income and fixed expenses to get a safe daily and weekly spending limit, your savings share and a category split.
Habit streak calculator
Free online habit streak calculator for tracking consecutive days completed.
Savings calculator (compound interest)
Free online savings calculator for estimating compound interest.
Savings calculator
Compound interest calculator with starting amount, monthly contribution, annual return and years. Results feed directly into your budget tracker template.
Habit streak calculator
Track consecutive days completed so far, target and days missed. Great for motivation and sharing progress with friends.
What's next
Adding:
- Tax calculator for budget templates
- Goal progress tracker
- Data validator for spreadsheet integrity
- Export helper for CSV cleaning
How tools work
All tools run in your browser, use no server and have zero dependencies. Click "Calculate” and the result appears instantly.
Why browser tools
No account required, no tracking, no updates to install. Just open the page and start calculating.
Related links
- Budget tracker template for saving goals
- Habit tracker template for streaks
- Blog articles about financial planning
- Support the project with a donation