Spreadsheet calculators and planning tools

Free calculators and planning helpers for founders and finance teams who live in Google Sheets and Excel. When you need full statements, jump to our templates.

Explore spreadsheet templates for full workbooks, or open the Lexicon for clear definitions of the terms behind the math.

Built for real spreadsheet work

Search or filter to match the job in front of you—percentages and growth, stats and loan schedules, time and hours, retirement checks, currency reference rates, and more. Most tools include copy-ready Google Sheets and Excel snippets; finance results are illustrations, not advice.

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PlanningLive
SIP calculator
Starting balance, monthly or quarterly SIP, expected return, and horizon—ending balance, contributed total, and gain. FV-style Sheets/Excel. Illustration only, not advice.
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PlanningLive
SWP calculator
Corpus, monthly or quarterly withdrawals, expected return, and horizon—ending balance, total withdrawn, and net change. Column-style Sheets/Excel. Illustration only, not advice.
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PlanningLive
Mutual fund calculator
Starting balance, optional monthly savings, horizon, expected return, and annual expense ratio—ending balance vs. a zero-fee illustration, FV-style patterns for Sheets and Excel. Illustration only, not a fund quote.
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Unit economicsLive
Stock calculator
Shares, buy and sell prices per share, optional buy and sell commissions—net profit or loss and return on invested capital. Sheets and Excel cell patterns. Illustration only, not live quotes or tax advice.
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Unit economicsLive
Invoice generator
Line items with qty × price, optional whole-invoice discount and one tax rate—subtotal, tax, total, TSV/Markdown copy and print for Sheets/Excel. Illustration only; not legal invoicing software.
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Unit economicsLive
PayPal fee calculator
Gross or target net, payment-type presets, optional +1.50% international add-on, and fixed fee by currency—processing fee, net, gross-up, and Sheets/Excel. Illustration; not a PayPal quote or official tool.
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Unit economicsLive
eBay fee calculator
Total sale on eBay.com (U.S.), category band, optional promoted listing %, and your costs—final value fee, per-order fee, fees total, net after fees, and profit. Illustration only; not an official eBay tool.
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Spreadsheet mathLive
Regex generator
Paste a pattern and sample text, toggle flags, and see matches locally. Copy-ready REGEXMATCH, REGEXEXTRACT, and REGEXREPLACE for Google Sheets; JavaScript engine with honest RE2 limits in the FAQ.
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