Free tools for spreadsheets & data
Small, genuinely useful tools that run entirely in your browser — no account, no upload limits, nothing leaves your device. Use them here, or embed any of them on your own site for free.
Forecast calculator
Paste a column of numbers and get an auto-tuned trend forecast with a chart, confidence range and downloadable CSV.
EmbeddableReporting cost calculator
Work out what manual reporting actually costs you each year — people, hours and rate — and how much is automatable.
EmbeddableSpreadsheet risk checker
Answer eight quick questions and get a risk score for your critical spreadsheet — with tailored fixes for the weak spots.
EmbeddableCAGR calculator
Compound annual growth rate between two values over time — the smoothed yearly rate, with a projection.
EmbeddablePercentage change calculator
Percentage increase or decrease between two numbers, plus the absolute difference and direction.
EmbeddableSample size calculator
How many survey or test responses you need for a target confidence level and margin of error.
EmbeddableStatistics calculator
Paste numbers, get mean, median, mode, standard deviation, quartiles and the full descriptive summary.
EmbeddableNPV & IRR calculator
Enter an investment and its cash flows — get net present value, internal rate of return and payback.
EmbeddableWant all of this on your own data, automatically?
DataHub Pro turns any spreadsheet into dashboards, forecasts and reports in minutes — with an audit trail for every number.
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