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Money calculators

Four small calculators for everyday money questions. They run in your browser, and nothing you type leaves this page. Each one shows the formula it uses, so you can check the result by hand.

Calculators

Emergency fund calculatorEnter your savings and monthly essentials to see how many months they cover, the target for three to six months, and how much is still to set aside.50/30/20 calculatorEnter your monthly take-home pay to split it by the 50/30/20 rule: half for needs, 30% for wants and 20% for savings and extra debt payments.Savings goal calculatorEnter a goal, what you have saved and the years you have. See the amount to put aside each month, with or without a yearly return you assume.Loan payment calculatorEnter the amount borrowed, the yearly interest rate and the years. See the equal monthly payment, the interest over the whole loan and the total paid.

The ideas behind them

  • How much should your emergency fund be
  • The 50/30/20 rule
  • How to make a budget
  • How to track your net worth
  • Asset allocation, step by step
  • Statement balance vs current balance

The same tools, starting from your own figures

In Fullgrove on iPhone, open Reports, then Tools and guides. Each tool starts from your ledger: ready money, last month's spending and income. You can change any number, and nothing is written back to the ledger.

Download on theApp Store

Fullgrove

A household ledger for iPhone that fills itself, with no bank login. Built for peace of mind about money.

Made in Taiwan

Questions: hello@fullgrove.com

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Guides

How to make a budget50/30/20 ruleEmergency fundNet worth trackerAsset allocationStatement vs current balanceBudget without bank linkingCouples budget appAlternatives