Zoho Sheet IMREAL: Extract the Real Component

=IMREAL(complex_number)

The sole required argument complex_number is text representing a complex number, such as "2+3j" or a reference to a cell holding a compatible representation. Zoho shows single, lowercase i and j imaginary-unit forms and an imaginary-only value "5j". There is no optional mode, radix, suffix selector or default argument in its documented syntax. Unlike COMPLEX, IMREAL does not assemble two separate coefficients from two different function parameters. The input may originate from COMPLEX, but standalone text values also appear in Zoho’s examples.

If the complex number is a+bi, IMREAL means a. Therefore an imaginary-only number such as 5j has real component zero, regardless of the fact that its displayed string contains no 0+ prefix. Note that the coefficient sign belongs with the number: in -3+4i, the real component is -3. These statements follow mathematics and the documented purpose; only the vendor’s named examples count as observed documentation outputs.

Create A1=Complex text, B1=Real component. Put the following values in A2:A5 as text. In B2 enter =IMREAL(A2) and fill down to B5. If Zoho recognizes the inputs as complex strings, compare with the numerical targets below.

For a constant-only control, enter =IMREAL("2+3j") into an empty cell and compare with the vendor-published output 2. This isolates a possible cell-input/formatting issue from function syntax. A formula referring to A2, rather than quoting a string, is a directly reproducible variation; native results remain to be checked.

The real part is one coordinate of the complex number, not its absolute value. For 2+3j, the real coordinate is 2, while the magnitude is sqrt(13) ≈ 3.605551275. For 1-4i, IMREAL yields 1 even though the imaginary component is negative. A simple spreadsheet that uses IMREAL instead of IMABS to report strength or distance would produce misleading results. The result is a scalar coefficient; it does not retain the i/j suffix, and its units require separate interpretation in the user’s model.

In impedance analysis, the real component might stand for resistance and the imaginary component for reactance, but only when the input indeed represents impedance using that convention. Do not ascribe units or physical meaning merely because a cell has complex-number text. Conversely, a coordinate pair might use the same representation to encode x and y, with no electrical interpretation at all.

Reconstruct-and-verify: Place real coefficients in A and imaginary coefficients in B. Use =COMPLEX(A2;B2;"j") in C2; then =IMREAL(C2) in D2 and =IMAGINARY(C2) in E2. The mathematical expectation is D2=A2 and E2=B2 for compatible numeric entries. The sequence is supported by the purposes of the three official functions, but is not a Zoho-tested cross-function workflow. Start with integer controls matching the help examples before introducing decimals.

Flag an unexpected real component: Given complex text in A2 and a permitted absolute real limit in B2, the conceptual check is =ABS(IMREAL(A2))>B2. It asks whether the magnitude of the real component exceeds a threshold, not whether the magnitude of the full complex number does. If you need the full modulus use IMABS instead. Enter the limit as a number and document its units. Consider a separate note for invalid input rather than suppressing errors with IFERROR before diagnosis.

Audit imported engineering values: Retain the raw complex text in one column. Use IMREAL and IMAGINARY in two extraction columns and IMABS in a third. For rows where all are valid, verify the Pythagorean relationship between extracted components and the reported magnitude. This checks the relationship mathematically without assuming text formatting is identical across application imports.

• Incorrect #VALUE!: The vendor documents this category for invalid argument types. Check for strings that do not match documented examples, stray spaces, wrong suffixes, currency/units appended to coefficients or a cell containing an error instead of a legitimate complex value. The page does not comprehensively specify a parser grammar.
• #NAME!: Confirm IMREAL is spelled correctly and literal strings use double quotes. For a reference such as A2, do not surround the cell address with quotes unless you literally intend the text A2 as the input.
• #REF!: Verify that the referenced cell still exists. The vendor describes broken cell references as a possible source.
• #N/A!: Included in the official general possible-errors list, but the page does not offer a specific valid complex string triggering this code. Do not invent one.
• Wrong mathematical metric: Use IMREAL for a; IMAGINARY for b; IMABS for sqrt(a²+b²). The three are not interchangeable.
• Imaginary-only notation: "5j" correctly yields 0 according to the vendor. Do not treat a missing explicit real component as a missing input or failure.
• Unusual formats: Tests of uppercase imaginary suffix, spaces, exponential notation, local decimal commas, blank cells and mixed i/j notation have not been established by the checked article. Mark these cases as validation work rather than predicting exact error codes.

The COMPLEX guide explains construction of coefficients; IMAGINARY extracts the other coordinate; IMABS computes magnitude. Zoho directly cross-links to COMPLEX and IMAGINARY in the IMREAL reference; the official external links are recorded with this manuscript.

Does IMREAL turn text into an ordinary number? Zoho says it returns the real coefficient; the examples are numeric. It is not a general text-number parser like VALUE.

Why does "5j" return 0 rather than 5? Five is the imaginary coefficient; the real coefficient is zero.

Can IMREAL reveal the negative sign? For the mathematical input -3+4i, the expected real part is -3. This example is independently derived, not a native app test.

Will the same formula work in every spreadsheet editor? Unverified. Source formats and function names overlap across products, but interoperability must be tested in each target application.

This is a guide to Zoho Sheet, based on its public English-language function help, retrieved on 13 October 2026. The vendor examples display semicolons between arguments. Copy the formulas exactly into an English-language Zoho Sheet worksheet using the illustrated syntax; if a workbook uses different regional or language preferences, consult the editor’s displayed function helper and its locale settings rather than silently replacing separators. Zoho documents configurable spreadsheet locale, language and calculation preferences; this guide does not infer a particular separator for every account or locale. The function article does not give a first-supported release, minimum plan, exhaustive mobile compatibility or an exact back-end engine build, so none is asserted here. The documentation establishes the function’s availability in the public Zoho Sheet reference, not execution in our account.

A formula beginning with = is an instruction for an actual spreadsheet. The expected result columns above come from Zoho’s own examples where explicitly marked, or independent mathematical evaluation where marked; none was executed in Zoho Sheet. Mathematical agreement does not prove how every string input, cell formatting choice, import conversion or edge case is handled by Zoho. This distinction matters especially for string representations of complex numbers, which should not be mistaken for a separate native complex-number cell type.

How to reproduce the examples

Create a blank sheet, enter each specified input into its designated cell and paste the formula into a different cell. Check that the input is a value rather than a string containing a leading apostrophe unless the formula specifically calls for text. Read the formula result in the cell and, if helpful, inspect the formula bar to distinguish the stored expression from what is displayed. Do not use formatted example text as proof of an exact output representation unless Zoho explicitly shows it. For comparison across regional settings, first record the workbook locale and whether the formula editor inserts semicolons. Keep a simple control case from Zoho’s own documentation in the same sheet.

Compatibility and source limits

Zoho lists .xlsx, .xls, .xlsm, .ods, .csv and other import formats in its file-format guide. File import support is not evidence that a complex-number formula will calculate identically in another spreadsheet application. When exchanging workbooks, verify the formula survived import/export, that suffix text remains lowercase where required and that outputs retain their meaning. For CSV export, remember that CSV preserves displayed values, not a working formula workbook; inspect an exported copy rather than assuming formulas survive. This guide makes no untested assertion of parity with Excel, Google Sheets, desktop apps, mobile clients, custom functions or specific subscription tiers.

References for these qualified claims: Zoho Sheet file formats and Zoho Sheet preferences and locale, both retrieved 2026-10-13.

• Authoritative function reference: Zoho Sheet IMREAL help; checked 2026-10-13. This source supports the documented purpose, exact argument order, syntax, named error categories and the explicitly cited vendor examples. It does not supply a function-introduction date.
• Supporting vendor references: Zoho Sheet complex-function catalogue, locale preferences, and supported file formats; checked 2026-10-13. These support related-function names and qualified platform/locale/import statements, not precise compatibility equivalence.
• Independent validation: Standard complex arithmetic in Python (built-in complex/abs) with manually derived checks. These independent calculations are not Zoho Sheet executions.
• Outstanding review: Native confirmation of formula parsing, cell formatting, import/export conversion, unusual string forms and any account/locale-specific behaviour.