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Free tool · v1.0

What is a conversion lift actually worth?

Move four sliders. See, in real time, how much revenue your website leaves on the table at every tenth of a percentage point of conversion rate. Built for SaaS and ecommerce decision-makers who want to argue with numbers, not vibes.

conversion_calc.exe · live
currency
inputs

The four levers.

Pull each one. Numbers update live.

Sessions / month landing on key pages.
1001000k
Percent of visitors that convert today.
0.0520
Where you'd like to land after improvements.
0.0525
Avg revenue per converted visitor (LTV works too).
110k
output

Impact of the lift.

Extra revenue / month
+110.000 €
Extra revenue / year
+1.320.000 €
revenue · current vs target
now
goal
conversions / mo · now1,000
conversions / mo · goal1,500
revenue / mo · now220.000 €
revenue / mo · goal330.000 €
value / visitor · now4 €
value / visitor · goal7 €
annual value of +0.1 pp132.000 €
sensitivity · annual extra revenue at relative lift
anchor · 2.00 % current
+10% lift
→ 2.20 % CR
264.000 €
+25% lift
→ 2.50 % CR
660.000 €
+50% lift
→ 3.00 % CR
1.320.000 €
+75% lift
→ 3.50 % CR
1.980.000 €
+100% lift
→ 4.00 % CR
2.640.000 €

privacy · all calculations happen in your browser. Nothing leaves your device. Refresh resets to defaults.

methodology

How the math actually works.

No black box. Three formulas, one assumption: every other variable holds steady so you can isolate the impact of a single conversion lift.

[01]

Conversions / month

visitors × (CR / 100)

How many people complete the goal action in a month.

[02]

Revenue / month

conversions × AOV

Multiply conversions by average value. Use LTV instead of AOV for subscription products.

[03]

Annual delta

(rev_new − rev_now) × 12

The headline number. Yearly revenue you unlock by closing the gap between current and target CR.

why a CR lift compounds

Conversion is the cheapest growth lever you own.

Paid traffic gets more expensive every quarter. SEO takes months. A conversion improvement compounds against everyvisitor your site already gets - tomorrow, next week, every month afterwards. That's why even a 0.2 pp lift can outweigh a six-figure ad spend bump.

It applies to existing traffic.

You're not paying twice for the same visitor. Every channel, every campaign, every organic page benefits from a higher CR.

It compounds month over month.

A lift you ship in March is still paying you in December. Annualize the monthly delta and the case sells itself.

It pays back fast.

Conversion work usually involves copy, layout and flow - cheap to ship, fast to test. The payback window is weeks, not quarters.

glossary

The terms behind the inputs.

Plain-language definitions. If you've ever sat in a meeting where someone said “lift” and meant something different than you did, this section is for you.

Conversion rate (CR)
The percent of visitors who complete the goal action. (conversions ÷ visitors) × 100.
Average order value (AOV)
Average revenue per converting visitor. Use LTV for subscription products.
Absolute lift (pp)
Change in percentage points. From 2.0% to 3.0% is +1.0 pp.
Relative lift (%)
Change as a percentage of the baseline. From 2.0% to 3.0% is +50% relative.
Value per visitor
Revenue ÷ visitors. The single number that hides inside CR and AOV combined.
Sensitivity
How outcomes change as inputs vary. The table at the bottom of the calculator is a sensitivity view.
FAQ

Questions about the math.

What does this conversion calculator actually do?
It translates a conversion rate change into money. You enter monthly visitors, your current conversion rate, the rate you'd like to hit, and your average order value (AOV). The tool computes monthly and annual extra revenue, the value of every 0.1 percentage point of lift, and shows a sensitivity table from +10% to +100% relative uplift.
How is conversion rate calculated?
Conversion rate is conversions divided by visitors, expressed as a percentage. If 50,000 people visit your site in a month and 1,000 convert, your conversion rate is (1,000 / 50,000) * 100 = 2.0%.
What is the difference between absolute and relative lift?
Absolute lift is the difference in percentage points (pp). Going from 2.0% to 3.0% is a +1.0 pp absolute lift. Relative lift is the percentage change vs. the baseline. The same move (2.0% → 3.0%) is a +50% relative lift, because 1.0 pp is half of 2.0 pp. The calculator shows both.
What is a good conversion rate for a SaaS website?
There's no single benchmark - it depends on the journey. A typical B2B SaaS marketing site converts 1-3% of visitors into trial signups. Free-to-paid conversion sits anywhere between 2% and 25% depending on product, pricing, and onboarding. Treat this calculator's defaults as a starting point, not a target.
Should I use AOV or LTV in the average order value field?
Both work, depending on the question you're asking. Use AOV (average order value) to see immediate transaction impact - good for ecommerce or one-off purchases. Use LTV (lifetime value) for subscription products to see the long-run revenue impact of a conversion uplift. The math is identical; the meaning differs.
Does this tool include traffic growth, churn, or seasonality?
No - it deliberately isolates one variable: conversion rate. Holding visitors and AOV constant lets you see exactly what a CR change is worth. For full forecasting (traffic, churn, seasonality, payback windows), you need a proper model. This is a back-of-envelope tool for prioritization decisions.
Is the calculator free to use? Do you store my data?
Yes, free. All calculations run in your browser - nothing is sent to a server, no account required, nothing stored. Refresh the page and the inputs reset to defaults.
Can I use this for non-revenue conversions, like leads?
Yes. Put the average value of a lead (e.g. expected revenue per qualified lead, or pipeline value) into the AOV field. The math works identically for any conversion that has a monetary value attached.
numbers are easy. lift is the hard part.

Now you know what the lift is worth. Want help getting it?

The Web Growth Audit turns the number you just calculated into a prioritized backlog of fixes - delivered in two weeks, no meetings, in a Notion playbook your team can ship from.

See the auditMore resources

A free conversion rate calculator for SaaS and ecommerce websites. Enter monthly visitors, current and target conversion rates, and average order value to see monthly and annual revenue impact, the value of every 0.1 pp lift, and a relative-uplift sensitivity table. Built by VeeberMedia - the home of the Web Growth Audit.