Free calculators
Just the figures. Nothing else.
Three small Irish sites that give you the number first, with plain-English notes. No sign-up, no ads.
🔒 All your data stays on your device. Nothing is sent.
Till
Irish take-home pay, mortgage overpayment, pension projection and savings tax, in euro.
- Take-home
- Mortgage
- Pension
- Savings
Gauge
Process capability (Cp, Cpk, Pp, Ppk), sample size and TOST equivalence, with notes on every result.
- Capability
- Sample size
- Equivalence
Grid
Heat-pump cost after an SEAI grant, and rooftop solar PV payback over 25 years. Grant figures are editable.
- Heat pump
- Solar PV
About Just the Figures
Just the Figures is a small set of free calculators for Irish take-home pay, a mortgage overpayment, a pension pot, savings tax, process capability, sample size, equivalence, and heat-pump and solar payback. 🔒 All your data stays on your device, nothing is sent.
Example. Open Till and try the take-home pay calculator. The first example is a single person on a €50,000 salary. Under 2026 current rules it shows about €39,648 for the year. That is an example, not a payslip. Each tool also has a “Put your own figures” option.
Common questions
What calculators are on Just the Figures?
Till for Irish take-home pay, a mortgage overpayment, a pension projection and savings tax; Gauge for process capability, sample size and equivalence; and Grid for heat-pump and solar PV payback.
Do I need to sign up or pay?
No. The calculators are free to use, with no sign-up and no ads. A Ko-fi link is there if you want to thank the maker. This site does not take a payment.
Where do the numbers I type go?
Nowhere. All your data stays on your device, nothing is sent. There is no analytics tag.
Is this professional advice?
No. The tools are for education and rough planning, not financial, tax, engineering or energy advice.