Create file and use this code :
=> From :
vendor/magento/module-catalog/view/base/templates/product/price/amount/default.phtml
=> To :
app/design/frontend/VendorName/ModuleName/Magento_Catalog/templates/product/price/amount/default.phtml
this file is defined from \Magento\Framework\Pricing\Render\Amount
The price itself is coming from this call:
<?php /* @escapeNotVerified */ echo $block->formatCurrency($block->getDisplayValue(), (bool)$block->getIncludeContainer()) ?>
If we take a look at the file that this method is created based on the class it's inheriting (/vendor/magento/framework/Pricing/Render/Amount.php
)
Update line no 24
<?php /* @escapeNotVerified */ echo $block->formatCurrency($block->getDisplayValue(), (bool)$block->getIncludeContainer()) ?>
To
<?php /* @escapeNotVerified */ echo $block->formatCurrency($block->getDisplayValue(), (bool)$block->getIncludeContainer() , 0) ?>
You need to override
vendor/magento/module-catalog/view/base/web/js/price-utils.js
To
app/design/frontend/VendorName/ModuelName/Magento_Catalog/web/js/price-utils.js
and change the value of precision on line 38:
var precision = isNaN(format.requiredPrecision = Math.abs(format.requiredPrecision)) ? 2 : format.requiredPrecision,
To
var precision = 0,