Soulver

Ever reach for a calculator and the back of an envelope to work something out? That's what Soulver is for.

It's a natural-language notepad calculator: think through a problem line-by-line, using plain words and numbers. The answers appear alongside each line as you type.

Soulver isn't just a calculator app — it's the paper you'd scribble on to figure something out. Except this paper does the numbers for you, so you stay thinking at the level of your problem.

20% of $1,480 | $296
$100 in EUR | €86
240 km in miles | 149 mi
$1,200 + 15% tax | $1,380
3 weeks from today | June 21

Because Soulver uses sheets (like Notes), you can explore different ideas: weigh options, change variables and watch everything update.

WHAT CAN SOULVER CALCULATE?

– Live currency conversions — 190 currencies, including crypto
– Percentages in plain language — "20% off $50", "$50 is what % of $200"
– Unit conversions — hundreds of units across length, weight, volume, data and more
– Dates & time — "days until Christmas", time intervals, clock and video-timecode math
– Time-zone conversions — "3pm New York to London"
– Financial functions — compound interest, mortgage repayments, hourly rates
– Sums & averages

It's the closest thing to an on-device universal calculator ever created.

POWER USER FEATURES

– Multi-word variables — "total cost = $750"
– Inline tokenized references to previous answers
– Subtotals
– Trip planning
– Wolfram|Alpha integration
– Headings, comments, labels & dividers to structure long sheets
– Custom units and global variables in the definition sheet
– Export to PDF, plain text & send beautiful HTML emails

ONE TIME PURCHASE

Soulver is a one-time universal purchase (Mac, iPhone, iPad).
We've been refining and improving Soulver since 2005, and major paid updates average once every 7 years.
Try it free for 60 days, no commitment, no automatic charge.