01What to Write to Us About
There's no wrong reason to get in touch, but here are the things that come up most often — and that we genuinely want to hear about.
The result doesn't match what your bank, teacher, or accountant calculated.
There's a calculation you need that isn't covered anywhere on the site yet.
A page won't load, a button doesn't respond, or the layout is wrong on your device.
Anything else — a question, a suggestion about the design, or just a note.
02Email Us Directly
The simplest way to reach us is by email. Click the address or the button below to open it in your mail app — we typically reply within one to two business days.
When writing in, it helps to mention which calculator your message is about and — for error reports — the inputs you used and the result you expected. That way we can look into it without needing to go back and forth.
03A Note on Response Times
All-Calc isn't run by a large team, which means responses take a little longer than a big company's support inbox. For most messages we aim to reply within one to two business days. During busy periods — particularly when a new batch of calculators has just launched — it may be closer to three or four days. We don't use autoresponders, so when you hear back, it's a real reply from the person who maintains the site.
We do read everything, even if a reply isn't always possible. Feedback about usability, design, and missing calculators shapes what gets built next, and a number of tools currently on the site exist because someone wrote in and described a calculation they couldn't find anywhere that actually worked properly.
04What We Can and Can't Help With
Email is the right place for questions about specific calculators, reports of errors or bugs, suggestions for new tools, and general feedback about the site. There are a few things we're not set up to help with, and it's worth being upfront about them so you're not waiting on a reply that isn't coming.
We can't provide financial, legal, medical, or tax advice — the calculators are educational tools designed to help you understand a formula and run scenarios, not to replace professional guidance. If a calculation result is going to drive a real financial decision, we'd always encourage you to verify it with a qualified advisor and, where relevant, with the institution involved — your bank, your employer's HR team, or your tax authority.
For partnership enquiries, affiliate proposals, or media requests, email works fine — just include enough context for us to understand what you're proposing. We don't accept paid placements that present sponsored content as editorial recommendations, but we're open to relevant, transparent arrangements.