What does a highlighted input mean?
Learn why a field is outlined in red, what the message under it means, and how to correct it so your result appears.
Updated · Using calculators
The short answer
A field outlined in red needs your attention. A short message under it tells you what is wrong, and as soon as you correct the field the result updates.
The red outline is not an error page and nothing is lost. It simply tells you which input to look at, so you can fix one field instead of searching the whole form.
What the message can say
The message under a highlighted field points to one of three problems.
| Problem | What it means | What to do |
|---|---|---|
| Missing value | The field is empty but the calculator needs it | Type a number into the field |
| Number outside the allowed range | The value is too low or too high for this input | Enter a value within the range the message describes |
| A date that does not exist | The date cannot be found on a real calendar, such as 31 February | Pick a valid date with the date picker |
How to fix it
- Find the field outlined in red.
- Read the short message under it.
- Change the value to fix what it describes.
- Look at the result. It updates by itself once the field is valid.
If the red outline stays
Check the unit beside the field and make sure you entered a plain number. For percentages, type 9 for 9%, not the percent sign.
If a field is highlighted even though the value looks right, contact support with the calculator's name and the values you entered.
Related articles
- How do I enter the right inputs?Read each label and unit, type percentages as plain numbers, and use the right control so the answer comes out correct.
- Enter percentages, dates and money correctlyLearn how to type percentages, pick dates and enter amounts so every Calcylator field accepts your numbers first time.
- My answer looks wrong: what to checkGo through units, percentages, dates, remembered values and rounding before you report a result that seems off.
- How do I report a problem with a calculator?Send the calculator’s name, your values and what you expected through Contact support so the team can reproduce it.
Guides that may help
- Percentage changes made simpleLearn how to calculate percentage increase and decrease with easy examples you can use every day.Percentages · 4 min read
- How to calculate EMI: a simple guideUnderstand how EMI works, learn the formula, and see a step-by-step example to calculate your monthly payments with ease.Loans & EMI · 6 min read
