HEIGHTCOMPARE · A WHOLE LIST, CONVERTED

Every height. Every unit. One table.

How to use ↗

One height per line, or CSV with height and unit columns. Add an optional label column. Import replaces this input only after the file passes validation.

Decimal feet: 5.5 means 5 ft 6 in. Use a dot for decimals; do not enter 5.10 for 5 ft 10 in.

Up to 1,000 rows and 500 KB. Files are processed in this browser; nothing is uploaded.

READY WHEN YOU ARE

Your converted list appears here.

Paste your heights or import a CSV, then select Convert all heights.

Bulk Height & Unit Converter

Convert a whole list of heights at once

Use this bulk height converter for class measurements, comparison research, model dimensions or any list of positive lengths. Paste one number per line or import a CSV containing mixed units. Each result includes centimetres, metres, millimetres, total inches, decimal feet and combined feet and inches.

How to use the bulk converter

  1. Paste one height per line and select its input unit, or use the CSV template for a mixed-unit list.
  2. For CSV, use height and unit column headers. Add label if you want names or reference IDs. Units must be cm, m, mm, in or ft.
  3. Choose zero to four decimal places. This sets the maximum decimals in the table and exported conversions.
  4. Select Convert all heights. The entire list must pass validation before results appear. Errors identify the data row; no invalid rows are silently skipped.
  5. On a phone, swipe horizontally inside the results table to see every unit. Labels and original input values remain available in the first columns.
  6. Select Export results CSV to download the complete table. The export retains the original height and unit columns so you can import it again.

CSV format and example

The first line is a header. Labels with commas must be enclosed in double quotes; double a quote inside a quoted label. Use a dot for decimals and a comma between columns. Save the file as UTF-8 CSV.

label,height,unit
Person A,170,cm
Person B,70,in
Person C,1.83,m
"Sample, fourth",5.5,ft

A 70-inch height equals 177.8 cm, 1.778 m, 1778 mm, 5.8333 decimal feet or 5 ft 10 in. With two decimal places selected, decimal feet displays 5.83. Decimal 5.5 feet equals 5 ft 6 in; it does not mean 5 ft 5 in. To enter 5 ft 10 in, use 70 inches.

Conversion rules

One metre equals 100 centimetres, one centimetre equals 10 millimetres, one inch equals exactly 2.54 centimetres and one foot equals 12 inches. Combined feet and inches are rounded together, with a carry into the next foot when needed. NIST: units of length.

Limits and privacy

Convert up to 1,000 data rows in a file or pasted input no larger than 500,000 bytes (500 KB). Each converted length must be above zero and no more than 1,000,000 cm. Labels must be one line and at most 80 characters; numeric input must be at most 32 characters. These limits support people and larger objects; they are not human-height limits.

Files are read on this device. Measurements are not uploaded to WordPress, added to the personality database or automatically saved in browser storage. Reloading or closing the page clears unsaved input. Download the CSV before leaving if you want to keep your work. Exported labels beginning with spreadsheet formula characters receive a leading apostrophe for safe spreadsheet opening.

Questions and answers

Can one CSV contain different units?

Yes. Each data row has its own unit value. The plain-list unit selector is used only when the input has no CSV header.

What happens if a CSV has an error?

A failed file import keeps the existing input and results. If you change pasted input and a conversion fails, previous results are removed so you cannot export an outdated table. Correct the reported row and convert again.

Can I import an exported results file?

Yes. The converter reads its original label, height and unit columns and ignores the additional conversion columns. The converter removes its spreadsheet-protection apostrophe before a formula-like label when reimporting, so maximum-length labels remain valid.

Why does a very small height show zero?

Display rounding can turn a tiny positive value into zero in a larger unit. Choose more decimal places or inspect centimetres and millimetres. Rounding does not change the original input retained in your export.

For one value, use the height converter. To visualize people together, try the family height chart or height comparison tool.